This won't fit your $100 budget, but a Mac mini with iMovie and iDVD software does a great job on this type of project.
I might be able to borrow or at least have access to a Mac Mini, so thanks for that suggestion!
* 1.66 GHz Core Duo/SD, $649, Apple
* 1.83 GHz Core Duo, $699, Apple
Which one would you suggest might work better for my project?